Aeroplane



March 9 1926.

Filed May 2L 1925 w. wALg.

AEROPLANE s sheets-sheet 1 l m W Syvum/Wol www4/)Qur Q @Il W. WALLAEROPLANE March 9,1926. 1,575,880

`Fi1ed May 2l. 1925 s sheets-sheet 2 31a/wanton atltoz nu! March 9 1926.

W. WALL AER'OPLANE Filed May 2.1- 1925 s sheets-sheet 5 Patented Mar. 9,1926.

UNITED STATES raraur ofrezca,

WILLIAM WALL, OF CLEVELAND, OHIO.

AEROPLANE.

Application filed 'May 21, 1925. Serial No. 31,835.

To all whom t may concern:

Be it known that I, 1WILLIAM WALL, a citizen of the United States,residing at Cleveland, in the coun-ty of Cuyahoga and State of Ohio,have invented certain new and useful Improvements in Aeroplanes,l ofwhich the following is a specification.

This invention relates to improvements in acroplanes, the primary objectbeing to construct an aeroplane or flying machine which will maintainits equilibrium at all times associated and controllable with minimumveffort on the part of the operator..

It is likewise anobjeot to providey anaeroplane having supporting wingsof great area and at the same time so constructand arrange them as torequire a minimum amount of space. n

Other objects will be in par-t obvious and in part pointed outhereinafter.

In order that the invention and its mode of operation may be readilyunderstood by those skilled in the art, I have in theaccompanyingilustrative drawings and detailed description pointed out the preferredembodiment of the same.r

Figure 1 is a side elevation of my improved aeroplane;

Figure 2 is a top plan view thereof;

Figure 3 is a front end elevation;

Figure i is a perspective view diagrammatically showing the supportingwing arrangement;

Figure 5 is a diagrammatic illustration of the plane control means;

Figure 6 is a detail view of the front end showing the connectionbetween the elevating planes and the main portion of the wings; and lFigure 7 is a detail view illustrating the manner in which the rear'control planesmay be adjusted. n A

Similar characters of reference designate similar parts throughout thisapplication.

The fuselage 10 is elongated and tapers ioward its opposite ends atwhich propellers 11 are arranged. rllhese propellers 11 are carried byair defiecting caps 12 andvboth are rotated together by means ofinternal combustion engines or the like power plants 13. Supportingwheels or ylanding' gear 14` of any preferred type is carried by thefuselage 10.

The supporting means includes a set of transverse ribs 15 which extendacrossfthe upper side of the fuselage 10 and haveA their end port-ionsuniformlyspaced there from. An elongated substantially invertedil-shaped frame 16k is fixed centrallyupon the set of transverse ribs 15and rigidly connected thereto as clearly shown in `Figure 3. The lowerside 17 of this V-shaped central portion is open while the other two-`sides 18 and 19 and theportions of the ribs beyond` the Ypoint ofconnection to the df-shaped section are covered with fabric of anypreferred type. supporting or sustaining member such as is shown inFigure 1. These transverse'ribs 15 have their outer ends braced by meansof wires 2O and 21 which extend to the fuselage This results in theformation of a and the apex oftheV -shaped portion 10 and t y 16respectively. v y

The horizontal wing portions 22 have substantially rectangular openings23 and 211 at theirl rear and forward ends respectively.

Combined elevating and sustaining planes 275 are arranged over theforward openings 24 of the horizontal wing 'portions 22 and have theirrear edges hinged or pivoted to the wings as shown at 26 in Figure 6. Asshown in this figure, coil springs 27 are arranged to normally elevateVthe front edges of these elevating planes 25.

These forward elevating planes 25 are adjusted to different positions byVmeans of a foot pedal 28 arranged on a rock-shaft 29 whose outer endscarry arms 30 as shown in Figure 5; these arms 30 having cords or cables31 attached thereto and passing over pulleys or the like 32 and thenfastened to the front edges of the planes as shown.

The rear elevating planes 33 are of less area than ythe openings 23 sothey may be moved through the openings to effect an upward or downwardmovement of the aero plane. As shown in Figures 5 and 7 the forward edgeof each rear plane 3?) is hinged to the frame work of the lwing` portion22 and at this hinged point I arraugI a noi'- Inally verticallyldisposed cross-bar 34 to whose extremities I fix control wires 35 in themanner clearly illustrated in Figure 5, These control wires have theirforward ends connected to a relatively small pulley 3G carried by atransverse shaft 37 4at Whose medial point is fixed a cross-bar 38.Gonveniently locatedfor operation by the pilot is a control member 39 inthe form of a sheave which may be locked at any point.

About this shea-ve I train a cable or cord 40 which is carriedrearwardly andl has its ends fastened in any preferred manner to theextremities of the last named cross-bar 38.'.

Vforth possesses an unusually large wing area which will materiallyassist in supporting the machine in the air, and further, througharrangement the inverted V-shaped central portionrlG extendinfzz,1longitudinally of the machine there will be a material reduction in thetendency to swerve fromV the desired course dueto adverse air currentsetc. `l'Ilie particular arrangement of the driving engines ineombination with the wing or plane construction will materially assistin balancing Vor stabilizing a machine so y constructed.

In operating this aeroplane, the motors are started toset the propellersin motion. lVhen a certain speed has been attained the front elevatingplanes 25 are adjusted as shown in `Figure l, and the rear elevatingplanes will temporarily maintain `a normal central position. After themachine has taken off, the front elevating'plane 25 may be returned to aposition in alinement with the remaining portion of the wing 22 and if aliiglieraltitude is desired the rear planes 33 may be adjusted to raisethe rear edges'.

Y The result of such manipulation is obvious.

Downward movement is effected through lowering the rear edges of the' 2.An aeroplane comprising, an elongated Y "l fuselage, an invertedV-sliaped member en;w

tending over the major4 portion of the fuse! lage, transverse .ribsarranged on the upper side of the fuselage and interconnecting y thesame with said member, substantially horizontally disposed wingsextending transl` versely from the' base `of `-said inemberand pellingand control means. a Y y '13. lAn aero lane co1npr`ising,`an elongatedfuselage, an inverted `V-shaped member 'extending Vover `the mainportionbf the fuselage, transverse ribs arranged on the upper side'ofthe fuselage and intel-connecting the coextensive in length therewith,and pro? same with-said member, substantially; hori- Zontally disposedwings extending trans# versely from the base of saidmemberandVcoextensive' in length therewith, control planes arranged at each endof` the horizontal wings,means for varying the angle of said planes, arudder, and means" for propelling the aeroplane.

In testimonywhereo I aflix my signature.

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